Let's get this math done. We have 58 and we're going to multiply it by 7. This is the same as taking 58 and adding it to itself 7 times.
Step 1: 0 + 58 = 58
Step 2: 58 + 58 = 116
Step 3: 116 + 58 = 174
Step 4: 174 + 58 = 232
Step 5: 232 + 58 = 290
Step 6: 290 + 58 = 348
Step 7: 348 + 58 = 406

So, 58*7 = 406